"How reliable is the 2008 Porsche Cayenne?"

"Based on 38 NHTSA complaints, the 2008 Porsche Cayenne has a median complaint mileage of 71670 miles. The most common issue is ELECTRICAL SYSTEM."

"What are common problems with the 2008 Porsche Cayenne?"

"The most frequently reported component in NHTSA complaints for the 2008 Porsche Cayenne is ELECTRICAL SYSTEM, accounting for a significant portion of the 38 total complaints filed."

2008 Porsche Cayenne: Reliability Data

Source: NHTSA — 38 complaints

Total Complaints

71,670mi

Median Mileage

ELECTRICAL SYSTEM

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

54,217 25th Percentile

71,670 Median Mileage

92,375 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM

ENGINE

POWER TRAIN

FUEL/PROPULSION SYSTEM

SUSPENSION

EXTERIOR LIGHTING

TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

SERVICE BRAKES, HYDRAULIC

UNKNOWN OR OTHER

ELECTRONIC STABILITY CONTROL (ESC)

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2008 PORSCHE CAYENNE. WHILE THE CONTACT WAS DRIVING AT AN UNKNOWN SPEED, THE TIRE PRESSURE SYSTEM WARNING INDICATOR ILLUMINATED WITH A FALSE LOW PRESSURE ALERT. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND FOUR WHEEL SENSORS WERE REPLACED. ON A SEPARATE OCCASION, THE CONT..."

"WITHIN MINUTES OF DRIVING MY SON TO SCHOOL, I HEARD A GRINDING SOUND FROM UNDERNEATH MY CAYENNE, THEN A SQUEALING, AND THE CAR BEGAN TO VIBRATE VIOLENTLY DURING ACCELERATION. THIS HAPPENED VERY QUICKLY AND WAS FRIGHTENING BECAUSE I WAS CROSSING A BRIDGE IN MORNING TRAFFIC. THE SERVICE MAN AT THE POR..."

"S10 DIRECT REPLY LETTER TO THE SECRETARY FROM REGARDING HAVING PROBLEMS WITH HIS 2008 PORSCHE CAYENNE. *TGW THE CONSUMER STATED HE EXPERIENCED NUMEROUS SAFETY PROBLEMS WITH THE ELECTRICAL SYSTEM AND BRAKES. THE CONSUMER STATED HE FILED TWO SEPARATE ARBITRATION AGAINST THE DEALER AND THE MANUFACTURE..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

ELECTRICAL SYSTEM 7 complaints

25th: 12,391 mi Median: 55,300 mi 75th: 72,340 mi

ENGINE 6 complaints

25th: 81,327 mi Median: 86,750 mi 75th: 98,875 mi

POWER TRAIN 5 complaints

25th: 22,501 mi Median: 49,070 mi 75th: 68,605 mi

FUEL/PROPULSION SYSTEM 3 complaints

Median: 119,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 9 TX: 6 RI: 5 FL: 3 WA: 3 CT: 2 UT: 2 ME: 1 NJ: 1 NV: 1

Who Files Complaints?

5.3%

Original Owners

94.7%

Second+ Owners

Porsche Cayenne — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2004	51	95,000	ENGINE	4
2005	43	78,000	FUEL/PROPULSION SYSTEM	2
2006	55	83,505	FUEL/PROPULSION SYSTEM	1
2009	20	50,000	POWER TRAIN	0
2011	37	65,000	ENGINE	1
2012	33	44,750	POWER TRAIN	0
2013	53	66,095	POWER TRAIN	0
2014	76	14,000	POWER TRAIN	0
2016	53	18,600	UNKNOWN OR OTHER	0
2017	22	19,586	UNKNOWN OR OTHER	3
2019	51	9,800	ELECTRICAL SYSTEM	2
2020	25	8,918	UNKNOWN OR OTHER	2
2021	20	-	UNKNOWN OR OTHER	0

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28